US Bridges

N4020(GARNETT Rd.) over Haikey Creek

FairPosted for load

Tulsa County, Oklahoma · Garnett Rd. .6S of 131st · Structure no. 094440000000000

Built
1940
85 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
122 ft
3 main spans
Daily traffic
1,359
2024 count
Owner
County
County Highway Agency

About this bridge

N4020(GARNETT Rd.) over Haikey Creek is a steel stringer/multi-beam or girder carrying N4020(GARNETT Rd.) over Haikey Creek in Tulsa County, Oklahoma. It was built in 1940, so it is 85 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,359 vehicles a day, roughly 10% of them trucks, projected to reach 2,174 by 2044. The structure is 122 ft (37.2 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesN4020(GARNETT Rd.)
CrossesHaikey Creek
LocationGarnett Rd. .6S of 131st
RouteCounty Highway N4020
CountyTulsa County
StateOklahoma
Coordinates35.96589, -95.85084
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating20 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length122 ft (37.2 m)
Longest span50 ft (15.2 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,359 (2024)
Projected traffic2,174 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$565,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4020(GARNETT Rd.) over Haikey Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is N4020(GARNETT Rd.) over Haikey Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.

How much traffic does N4020(GARNETT Rd.) over Haikey Creek carry?

About 1,359 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is N4020(GARNETT Rd.) over Haikey Creek?

The structure is 122 ft (37.2 m) long with a longest span of 50 ft (15.2 m) and a deck 23 ft wide.

Who owns N4020(GARNETT Rd.) over Haikey Creek?

It is owned by the County Highway Agency.